US20070278331A1 - Spray Nozzle - Google Patents
Spray Nozzle Download PDFInfo
- Publication number
- US20070278331A1 US20070278331A1 US10/560,406 US56040604A US2007278331A1 US 20070278331 A1 US20070278331 A1 US 20070278331A1 US 56040604 A US56040604 A US 56040604A US 2007278331 A1 US2007278331 A1 US 2007278331A1
- Authority
- US
- United States
- Prior art keywords
- spray
- nozzle
- spray nozzle
- nozzle according
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
- B05B1/042—Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane of the jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
- B41F7/30—Damping devices using spraying elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
- B05B1/044—Slits, i.e. narrow openings defined by two straight and parallel lips; Elongated outlets for producing very wide discharges, e.g. fluid curtains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
- B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
Definitions
- the invention relates to a spray nozzle for spraying fountain solution or the like on a roll in a printing machine.
- the spray nozzle comprises a spray opening on a front end of the spray nozzle, and a base plateau situated on a level between the front end and an opposite rear end of the spray nozzle.
- Spray nozzles for spraying fountain solution on a roll in a printing machine are known e.g. from U.S. Pat. No. 5,595,116.
- One option to reduce the clogging of the nozzle is hence to make design changes of the nozzle in the vicinity of the spray opening, in order to change the recirculating flow.
- Such design changes are beneficial in that it is very easy to retrofit existing spray systems with redesigned nozzles.
- the invention solves or reduces the above mentioned clogging and other problems by means of a spray nozzle according to claim 1 .
- Preferred embodiments of the invention are described in the dependent claims.
- FIG. 1 is a top plan view of a flat-spray nozzle according to the present invention
- FIG. 2 is a section view of the flat spray nozzle, taken along the line B-B of FIG. 1 ;
- FIG. 3 is a section view of the flat spray nozzle, taken along the line A-A of FIG. 1 .
- FIGS. 1, 2 , and 3 show three different views of a spray nozzle 100 comprising a spray opening 110 that opens on an elevated protrusion 120 .
- the end of the nozzle comprising the spray opening will be referred to as “front end”, while the opposite end thereof will be referred to as “rear end”.
- the elevated protrusion 120 protrudes from a base plateau 130 , which connects to sloping sides 140 . All the above-mentioned components are situated within enclosing walls 150 .
- the enclosing walls 150 connect to surfaces 160 , which in turn connect to a circumferential guiding wall 170 .
- a holding surface 180 is provided in the vicinity of the circumferential guiding wall 170 , close to the rear end of the nozzle 100 .
- the rear end also comprises a sealing surface 190 .
- the sealing surface 190 and the holding surface 180 are connected by a second circumferential guiding surface 200 .
- the nozzle 100 comprises a channel 210 that connects the rear end of the nozzle with the spray opening 110 .
- a liquid to be sprayed is supplied to the rear end of the channel 210 , whereupon the liquid is transported to the spray opening 110 and sprayed through spray opening 110 , which gives a flat spray cone as shown by the dashed lines S of FIGS. 2 and 3 .
- the nozzle 100 is attached to a nozzle holder (not shown) by means of a threaded nut (not shown) with a shoulder engaging the holding surface 180 .
- the sealing surface 190 provides a seal between the nozzle holder and the nozzle.
- a gasket or O-ring can be provided between the sealing surface 190 and the nozzle holder.
- the seal between the nozzle holder and the nozzle can be provided in other ways, e.g. by means of a protrusion from the holder, which protrusion protrudes into the channel 210 .
- the connection between the channel and the protrusion from the holder is preferably sealed by means of an O-ring.
- the function of the enclosing walls 150 is two-folded; on one hand, they enclose the spray opening 110 , and serve as a director for the airflow in the vicinity of the spray; on the other hand, they can serve as guides for an air cap.
- the sloping sides 140 guide the airflow in the vicinity of the spray opening.
- the sloping sides 140 reach all the way up to the spray opening 110 , which means the elevated platform 120 and the base plateau 130 actually are the same surface.
- the spray opening 110 opens on a protrusion 120 , that protrudes over the base plateau 130 .
- the height of the protrusion is, in one embodiment, about 2 mm, but can vary within large limits without departing from the scope of the invention.
- the front area of the protrusion is about 2 by 2 mm, i.e. about the length of the oblong spray opening.
- the base plateau is about 5 by 5 mm, i.e. the distance between the inner sides of the enclosing walls 150 is 5 mm.
- the thickness of the enclosing walls is about 1.5 mm, i.e.
- the distance between the outer sides of the enclosing walls 150 is 8 mm.
- the sloping sides 140 connect to the guiding surface 170 at a distance of 5 mm from the rear end of the nozzle 100 , and has a slope relative to a length axis of the nozzle of about 45 degrees.
- the diameter of the guiding surface 170 is, in a preferred embodiment, about 12 mm.
- the total height of the nozzle 100 is about 10 mm, and the diameter of the guiding surface 200 is about 15 mm.
- the width of the spray opening is about 0.2 mm, and its length is, as mentioned, 2 mm.
- the dimension of the channel 210 is not important, as long as it is wide enough not to restrict the flow of liquid to be sprayed on its way from the nozzle holder to the spray opening 110 .
- the nozzle is manufactured from stainless steel, but also other materials resistant to a misty environment could be used, e.g. tungsten, plastics, titanium, aluminum, nickel, or the like.
Abstract
A spray nozzle for spraying fountain solution or the like on a roll in a printing machine is presented, wherein the spray nozzle comprises a spray opening at a base plateau at a front end of the spray nozzle. The spray opening opens on a protrusion protruding from the base plateau in the spray direction of the nozzle.
Description
- The invention relates to a spray nozzle for spraying fountain solution or the like on a roll in a printing machine. The spray nozzle comprises a spray opening on a front end of the spray nozzle, and a base plateau situated on a level between the front end and an opposite rear end of the spray nozzle.
- Spray nozzles for spraying fountain solution on a roll in a printing machine are known e.g. from U.S. Pat. No. 5,595,116.
- It is a well-known fact that such spray nozzles tend to get clogged due to impurities in the air in the vicinity of the printing machine. The impurities tend to build up close to the nozzle opening. In order to minimize the problem with nozzle clogging, several different air caps have been used to protect the nozzle from negative influences of impurities in the air. Such an air cap has an opening for the spray, through which low-pressure air is directed, in the same direction as the spray, which gives the spray nozzle a clean environment to work in.
- One problem with air caps is that it is difficult to retrofit existing spray systems with air-capped nozzles.
- During operation of prior art nozzles, it has been found that the impurities start to build up on sloping sides, in the vicinity of the spray opening. As operation continues, the size of the clogged area increases, and gets closer and closer towards the spray opening. Finally, the spray from the spray opening is adversely affected.
- One theory regarding the impurity build up is that a recirculation zone is created in the vicinity of the spray opening. Due to this recirculation, dirt in the ambient air is transported from the air towards the sloping sides. As the dirt carrying recirculating flow from the ambient air hits the sloping sides, the dirt starts to build up.
- One option to reduce the clogging of the nozzle is hence to make design changes of the nozzle in the vicinity of the spray opening, in order to change the recirculating flow. Such design changes are beneficial in that it is very easy to retrofit existing spray systems with redesigned nozzles.
- The invention solves or reduces the above mentioned clogging and other problems by means of a spray nozzle according to claim 1. Preferred embodiments of the invention are described in the dependent claims.
- In the following, the invention will be described by means of an embodiment, with reference to the appended drawings, wherein
-
FIG. 1 is a top plan view of a flat-spray nozzle according to the present invention; -
FIG. 2 is a section view of the flat spray nozzle, taken along the line B-B ofFIG. 1 ; and -
FIG. 3 is a section view of the flat spray nozzle, taken along the line A-A ofFIG. 1 . -
FIGS. 1, 2 , and 3 show three different views of aspray nozzle 100 comprising aspray opening 110 that opens on an elevatedprotrusion 120. In the following, the end of the nozzle comprising the spray opening will be referred to as “front end”, while the opposite end thereof will be referred to as “rear end”. The elevatedprotrusion 120 protrudes from abase plateau 130, which connects to slopingsides 140. All the above-mentioned components are situated within enclosingwalls 150. The enclosingwalls 150 connect tosurfaces 160, which in turn connect to a circumferential guidingwall 170. Further, aholding surface 180 is provided in the vicinity of the circumferential guidingwall 170, close to the rear end of thenozzle 100. The rear end also comprises asealing surface 190. Thesealing surface 190 and theholding surface 180 are connected by a second circumferential guidingsurface 200. Finally, thenozzle 100 comprises achannel 210 that connects the rear end of the nozzle with thespray opening 110. - During operation, a liquid to be sprayed is supplied to the rear end of the
channel 210, whereupon the liquid is transported to the spray opening 110 and sprayed throughspray opening 110, which gives a flat spray cone as shown by the dashed lines S ofFIGS. 2 and 3 . - In the following, the function of the
spray nozzle 100 will be described. - The
nozzle 100 is attached to a nozzle holder (not shown) by means of a threaded nut (not shown) with a shoulder engaging theholding surface 180. During the attachment of thenozzle 100 on the nozzle holder, thenozzle 100 is guided to the right position on the holder by means of the circumferential guidingsurfaces surface 190 provides a seal between the nozzle holder and the nozzle. To improve the sealing, a gasket or O-ring can be provided between the sealingsurface 190 and the nozzle holder. In other embodiments, the seal between the nozzle holder and the nozzle can be provided in other ways, e.g. by means of a protrusion from the holder, which protrusion protrudes into thechannel 210. The connection between the channel and the protrusion from the holder is preferably sealed by means of an O-ring. - The function of the enclosing
walls 150 is two-folded; on one hand, they enclose thespray opening 110, and serve as a director for the airflow in the vicinity of the spray; on the other hand, they can serve as guides for an air cap. - The sloping
sides 140 guide the airflow in the vicinity of the spray opening. On prior art devices, the slopingsides 140 reach all the way up to thespray opening 110, which means theelevated platform 120 and thebase plateau 130 actually are the same surface. In other embodiments, it might be advantageous not to have any sloping sides at all, but let the base plateau go all the way out to the guidingsurface 170. - The major difference between the prior art nozzles and the
nozzle 100 according to the present invention is that the spray opening 110 opens on aprotrusion 120, that protrudes over thebase plateau 130. The height of the protrusion is, in one embodiment, about 2 mm, but can vary within large limits without departing from the scope of the invention. In one preferred embodiment, the front area of the protrusion is about 2 by 2 mm, i.e. about the length of the oblong spray opening. In the preferred embodiment, the base plateau is about 5 by 5 mm, i.e. the distance between the inner sides of the enclosingwalls 150 is 5 mm. The thickness of the enclosing walls is about 1.5 mm, i.e. the distance between the outer sides of the enclosingwalls 150 is 8 mm. The slopingsides 140 connect to the guidingsurface 170 at a distance of 5 mm from the rear end of thenozzle 100, and has a slope relative to a length axis of the nozzle of about 45 degrees. The diameter of the guidingsurface 170 is, in a preferred embodiment, about 12 mm. - The total height of the
nozzle 100 is about 10 mm, and the diameter of the guidingsurface 200 is about 15 mm. - Finally, the width of the spray opening is about 0.2 mm, and its length is, as mentioned, 2 mm. The dimension of the
channel 210 is not important, as long as it is wide enough not to restrict the flow of liquid to be sprayed on its way from the nozzle holder to the spray opening 110. - Preferably, the nozzle is manufactured from stainless steel, but also other materials resistant to a misty environment could be used, e.g. tungsten, plastics, titanium, aluminum, nickel, or the like.
- The dimensions above are given for the sole purpose of describing a preferred embodiment, and are not limiting the scope of the invention. The scope of the invention is defined in the appended claims.
Claims (9)
1. A spray nozzle for spraying fountain solution or the like on a roll in a printing machine, the spray nozzle comprising a spray opening at a base plateau 3 at a front end of the spray nozzle, comprising the spray opening opens on a protrusion protruding from the base plateau in the spray direction of the nozzle.
2. The spray nozzle according to claim 1 , wherein the spray opening is oblong, and hence gives a flat spray.
3. The spray nozzle according to claim 1 , wherein sloping sides connect slope rearwardly from the base plateau.
4. The spray nozzle according to claim 1 , wherein the protrusion protrudes about 2 mm over the base plateau.
5. The spray nozzle according to claim 1 , wherein the protrusion has a front area of about 2 by 2 mm.
6. The spray nozzle according to claim 1 , wherein the sloping sides, the spray opening, the base plateau an the protrusion are enclosed by enclosing walls.
7. The spray nozzle according to claim 1 , wherein the sloping sides slope with an angle of about 45 degrees.
8. The spray nozzle according to claim 1 , wherein the nozzle is manufactured from a uniform piece of material.
9. The spray nozzle according to claim 1 , wherein the nozzle is manufactured from stainless steel.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0301920A SE525124C2 (en) | 2003-06-30 | 2003-06-30 | spray nozzle |
SE0301920-5 | 2003-06-30 | ||
PCT/SE2004/000890 WO2005000584A1 (en) | 2003-06-30 | 2004-06-08 | Spray nozzle |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070278331A1 true US20070278331A1 (en) | 2007-12-06 |
Family
ID=27656651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/560,406 Abandoned US20070278331A1 (en) | 2003-06-30 | 2004-06-08 | Spray Nozzle |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070278331A1 (en) |
DE (1) | DE112004001146T5 (en) |
SE (1) | SE525124C2 (en) |
WO (1) | WO2005000584A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110144429A1 (en) * | 2009-12-14 | 2011-06-16 | C2Cure Inc. | Endoscope with an improved working channel |
KR101606132B1 (en) | 2014-12-29 | 2016-03-24 | 김영환 | Air knife unit of multi-hole nozzle type |
US9307841B2 (en) | 2014-09-11 | 2016-04-12 | Mediamation, Inc. | Systems and methods for fluid delivery in seat systems |
US10076712B2 (en) | 2014-09-11 | 2018-09-18 | Mediamation, Inc. | Systems and methods for fluid delivery in seat systems |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4708058A (en) * | 1985-10-10 | 1987-11-24 | Smith Rpm Corporation | Water pulse spray dampening system and method for printing presses |
US4891249A (en) * | 1987-05-26 | 1990-01-02 | Acumeter Laboratories, Inc. | Method of and apparatus for somewhat-to-highly viscous fluid spraying for fiber or filament generation, controlled droplet generation, and combinations of fiber and droplet generation, intermittent and continuous, and for air-controlling spray deposition |
US5595116A (en) * | 1994-09-30 | 1997-01-21 | Kabushiki Kaisha Tokyo Kikai Seisakusho | Dampening apparatus of lithographic printing machine |
US6293476B1 (en) * | 2000-06-28 | 2001-09-25 | Illinois Tool Works Inc. | Spray gun nozzle assembly air cap |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB666247A (en) * | 1949-01-11 | 1952-02-06 | Edward John Marshall | Improvements in or relating to adjustable nozzles for spraying liquids |
US5040457A (en) * | 1989-10-10 | 1991-08-20 | Rockwell International Corporation | Printing press dampener |
SE507913C2 (en) * | 1993-04-23 | 1998-07-27 | Jimek Int Ab | Method and apparatus for improving the operation of a spray beam in a printing press |
JP3657922B2 (en) * | 2002-05-10 | 2005-06-08 | 株式会社東京機械製作所 | Spray dampening water supply device |
-
2003
- 2003-06-30 SE SE0301920A patent/SE525124C2/en not_active IP Right Cessation
-
2004
- 2004-06-08 US US10/560,406 patent/US20070278331A1/en not_active Abandoned
- 2004-06-08 DE DE112004001146T patent/DE112004001146T5/en not_active Withdrawn
- 2004-06-08 WO PCT/SE2004/000890 patent/WO2005000584A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4708058A (en) * | 1985-10-10 | 1987-11-24 | Smith Rpm Corporation | Water pulse spray dampening system and method for printing presses |
US4891249A (en) * | 1987-05-26 | 1990-01-02 | Acumeter Laboratories, Inc. | Method of and apparatus for somewhat-to-highly viscous fluid spraying for fiber or filament generation, controlled droplet generation, and combinations of fiber and droplet generation, intermittent and continuous, and for air-controlling spray deposition |
US5595116A (en) * | 1994-09-30 | 1997-01-21 | Kabushiki Kaisha Tokyo Kikai Seisakusho | Dampening apparatus of lithographic printing machine |
US6293476B1 (en) * | 2000-06-28 | 2001-09-25 | Illinois Tool Works Inc. | Spray gun nozzle assembly air cap |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110144429A1 (en) * | 2009-12-14 | 2011-06-16 | C2Cure Inc. | Endoscope with an improved working channel |
WO2011081754A2 (en) | 2009-12-14 | 2011-07-07 | C2Cure Inc. | Endoscope with an improved working channel |
US8465421B2 (en) | 2009-12-14 | 2013-06-18 | C2Cure Inc. | Endoscope with an improved working channel |
US9138134B2 (en) | 2009-12-14 | 2015-09-22 | Gyrus Acmi, Inc. | Endoscope with an improved working channel |
US9307841B2 (en) | 2014-09-11 | 2016-04-12 | Mediamation, Inc. | Systems and methods for fluid delivery in seat systems |
US10076712B2 (en) | 2014-09-11 | 2018-09-18 | Mediamation, Inc. | Systems and methods for fluid delivery in seat systems |
KR101606132B1 (en) | 2014-12-29 | 2016-03-24 | 김영환 | Air knife unit of multi-hole nozzle type |
Also Published As
Publication number | Publication date |
---|---|
SE0301920D0 (en) | 2003-06-30 |
SE0301920L (en) | 2004-12-07 |
SE525124C2 (en) | 2004-12-07 |
DE112004001146T5 (en) | 2006-05-11 |
WO2005000584A1 (en) | 2005-01-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BALDWIN JIMEK AB, SWEDEN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HANSSON, BIRGER;REEL/FRAME:018846/0056 Effective date: 20060211 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |